| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| /* $Id$ */ |
| |
| package org.apache.fop.render; |
| |
| //Java |
| import java.util.Map; |
| |
| //FOP |
| import org.apache.fop.apps.FOUserAgent; |
| |
| /** |
| * The Render Context for external handlers. This provides a rendering context |
| * so that external handlers can get information to be able to render to the |
| * render target. |
| */ |
| public class RendererContext { |
| |
| private String mime; |
| private AbstractRenderer renderer; |
| private FOUserAgent userAgent; |
| private Map props = new java.util.HashMap(); |
| |
| /** |
| * Contructor for this class. It takes a MIME type as parameter. |
| * |
| * @param renderer The current renderer |
| * @param m The MIME type of the output that's generated. |
| */ |
| public RendererContext(AbstractRenderer renderer, String m) { |
| this.renderer = renderer; |
| this.mime = m; |
| } |
| |
| /** |
| * @return Returns the renderer. |
| */ |
| public AbstractRenderer getRenderer() { |
| return renderer; |
| } |
| |
| /** |
| * Returns the MIME type associated with this RendererContext. |
| * |
| * @return The MIME type (ex. application/pdf) |
| */ |
| public String getMimeType() { |
| return mime; |
| } |
| |
| /** |
| * Sets the user agent. |
| * |
| * @param ua The user agent |
| */ |
| public void setUserAgent(FOUserAgent ua) { |
| userAgent = ua; |
| } |
| |
| /** |
| * Returns the user agent. |
| * |
| * @return The user agent |
| */ |
| public FOUserAgent getUserAgent() { |
| return userAgent; |
| } |
| |
| /** |
| * Sets a property on the RendererContext. |
| * |
| * @param name The key of the property |
| * @param val The value of the property |
| */ |
| public void setProperty(String name, Object val) { |
| props.put(name, val); |
| } |
| |
| /** |
| * Returns a property from the RendererContext. |
| * |
| * @param prop The key of the property to return. |
| * @return The requested value, <code>null</code> if it doesn't exist. |
| */ |
| public Object getProperty(String prop) { |
| return props.get(prop); |
| } |
| |
| /** |
| * Wrap the render context to allow easier access to its values. |
| * |
| * @param context the renderer context |
| * @return the generic renderer context wrapper |
| */ |
| public static RendererContextWrapper wrapRendererContext(RendererContext context) { |
| RendererContextWrapper wrapper = new RendererContextWrapper(context); |
| return wrapper; |
| } |
| |
| /** |
| * Base class for a wrapper around RendererContext to access its properties in a type-safe, |
| * renderer-specific way. |
| */ |
| public static class RendererContextWrapper { |
| |
| /** The wrapped RendererContext */ |
| protected RendererContext context; |
| |
| /** |
| * Main constructor |
| * @param context the RendererContent instance |
| */ |
| public RendererContextWrapper(RendererContext context) { |
| this.context = context; |
| } |
| |
| /** @return the user agent */ |
| public FOUserAgent getUserAgent() { |
| return context.getUserAgent(); |
| } |
| |
| /** @return the currentXPosition */ |
| public int getCurrentXPosition() { |
| return ((Integer)context.getProperty(RendererContextConstants.XPOS)).intValue(); |
| } |
| |
| /** @return the currentYPosition */ |
| public int getCurrentYPosition() { |
| return ((Integer)context.getProperty(RendererContextConstants.YPOS)).intValue(); |
| } |
| |
| /** @return the width of the image */ |
| public int getWidth() { |
| return ((Integer)context.getProperty(RendererContextConstants.WIDTH)).intValue(); |
| } |
| |
| /** @return the height of the image */ |
| public int getHeight() { |
| return ((Integer)context.getProperty(RendererContextConstants.HEIGHT)).intValue(); |
| } |
| |
| /** @return the foreign attributes */ |
| public Map getForeignAttributes() { |
| return (Map)context.getProperty(RendererContextConstants.FOREIGN_ATTRIBUTES); |
| } |
| } |
| } |
| |